On The Cover: Ribbon and surface representation showing the crystal structure of disulfide-linked HLA-G dimer. It confers efficient signaling by binding to human inhibitory receptors, leukocyte Lg-like receptor B1(LILRB1) and LILRB2, and thus plays a role in protecting the fetus from the maternal immune response in placenta. The background is an ultrasound image of placenta with a fetus "Tai-sei." For details see the article by Shiroishi et al., pages 10439–10447.

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